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FREE, FORCED, AND MIXED CONVECTION IN A DARCY−BRINKMAN POROUS MEDIUM ALONG A VERTICAL ISOTHERMAL PLATE

Volumen 19, Ausgabe 7, 2016, pp. 649-657
DOI: 10.1615/JPorMedia.v19.i7.60
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ABSTRAKT

The characteristics of the boundary layer flow past a plane surface adjacent to a saturated Darcy-Brinkman porous medium are investigated in this article. The flow is driven by an external free stream moving with constant velocity and a buoyant force due to temperature difference. The surface temperature and the ambient temperature are constant. The flow is nonsimilar and is investigated numerically by a finite volume method. The free convection and the forced convection flows are governed by two nondimensional parameters, that is, the Prandtl number and the axial distance along the plate (different for the two cases), whereas the mixed convection flow is governed by an extra nondimensional parameter, which is a modified Grashof number. The influence of these parameters on the results is investigated and the results are presented in tables and figures. The free and forced convection flows were related to the corresponding magnetohydrodynamic flows. It was found that the mixed convection always tends to the forced convection state where some analytical solutions exist.

REFERENZIERT VON
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  2. Qawasmeh Bashar R, Alrbai Mohammad, Al-Dahidi Sameer, Forced convection heat transfer of Casson fluid in non-Darcy porous media, Advances in Mechanical Engineering, 11, 1, 2019. Crossref

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